The Library of Congress system for the following book is that every book receives a classification number that starts with 1-3 letters. Those letters give a general idea of the topic. The "Teaching New Math" book It's in the Q's for sciences, and more specifically QA's under math. So the answer will be looking for is QA.
A library is a room or building or place where many books are kept. Generally, libraries are public and allow people to take the books to read in their homes. Most libraries admit people to borrow books, and they can keep them for some weeks.
The primary purpose of the public library is to provide resources and services in a variety of media to meet the needs of individuals and groups for education, information, and personal development, including recreation and leisure.
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Ummmm ummmm ummmm u seem young if u don’t know this ...
“If you don’t help them, they will be destroyed.” That makes the most sense for a moral dilema.
Answer:
the author's purpose is to persuade or convince
